Card Number Validation in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 321st Shanethegamer 🇺🇸 789 88 122ms 4 Oct 2024 322nd MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 323rd emgordon154 789 151 288ms 17 Jan 2025 324th edsrzf 🇳🇿 788 119 155ms 23 Jul 2025 325th emgordon154 787 164 1,815ms 22 Dec 2025 326th KingSkyrock 🇺🇸 786 82 10ms 14 Oct 2024 327th retrohun 786 90 2ms 5 hours ago 328th namelessiw 786 119 565ms 9 Oct 2025 329th stefangimmillaro 785 61 35ms 1 Oct 2024 330th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 331st Shanethegamer 🇺🇸 784 91 442ms 3 Oct 2024 332nd Shanethegamer 🇺🇸 784 152 278ms 3 Oct 2024 332nd targrik 784 152 304ms 7 Jul 2025 334th annaproxy 782 102 17ms 1 Oct 2024 334th snoozingnewt 🇨🇦 782 102 9ms 6 Dec 2025 334th Flekay 🇩🇪 782 102 18ms 19 Feb 2026 334th dokutan 782 102 16ms 23 days ago 334th aksyristos 782 102 18ms 3 days ago 334th jusaka 782 102 17ms 2 days ago 340th SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 341st duckyluuk 🇳🇱 780 97 10ms 25 Nov 2025 342nd albanian-laundromat 779 74 1,086ms 3 Nov 2025 343rd GrayJoKing 🇦🇺 779 82 133ms 1 Oct 2024 344th sean-niemann 🇺🇸 779 107 375ms 3 Oct 2024 345th Shanethegamer 🇺🇸 779 120 364ms 24 Sep 2025 346th m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 347th uttumuttu 🇫🇮 777 83 10ms 1 Oct 2024 347th KatieLG 🇬🇧 777 83 10ms 1 Oct 2024 347th Larento 777 83 9ms 4 Nov 2024 347th Andrey-Plotnikov 777 83 10ms 13 Jan 2025 347th nathanadams 🇳🇿 777 83 10ms 6 Oct 2025 352nd adriweb 🇫🇷 777 102 1ms 5 Oct 2024 353rd sean-niemann 🇺🇸 777 105 461ms 1 Oct 2024 354th AlephSquirrel 776 124 7ms 21 Oct 2024 355th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 356th DialFrost 🇸🇬 773 121 369ms 24 Sep 2025 357th sisyphus-ppcg 🇦🇺 772 62 38ms 3 Oct 2024 358th DialFrost 🇸🇬 771 90 2ms 18 Nov 2025 359th emgordon154 770 83 138ms 18 Nov 2024 360th targrik 770 88 9ms 7 Feb 2025 361st Waffle3z 770 103 2ms 2 Oct 2024 362nd xsot 🇸🇬 770 125 7ms 20 Oct 2024 363rd retrohun 769 63 20ms 2 Oct 2024 364th luuumine 🇫🇷 769 92 1ms 5 Dec 2025 364th bzd7 769 92 2ms 7 Dec 2025 366th ovs-code 🇩🇪 768 122 148ms 25 Apr 2025 367th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 368th didion0 🇺🇸 767 84 10ms 10 Jan 2025 369th jatloe 767 104 10ms 1 Oct 2024 370th MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 371st albanian-laundromat 763 118 90ms 13 Nov 2025 372nd Shanethegamer 🇺🇸 763 124 7ms 4 Oct 2024 373rd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 374th MeWhenI 🇻🇦 761 89 5ms 2 Oct 2024 375th sean-niemann 🇺🇸 761 93 1ms 24 Oct 2024 376th emgordon154 760 63 35ms 18 Nov 2024 376th SirBogman 🇺🇸 760 63 35ms 19 Jul 2025 378th fourth-bit 760 105 17ms 1 Oct 2024 378th jared-hughes 760 105 16ms 3 Oct 2024 378th mattyhempstead 760 105 26ms 7 Oct 2024 381st DialFrost 🇸🇬 759 76 1,041ms 30 Aug 2025 382nd weliveinhell 🇭🇹 758 85 11ms 1 Oct 2024 382nd SteRoy 758 85 11ms 13 May 2025 384th CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 385th albanian-laundromat 758 161 27ms 25 days ago 386th MeWhenI 🇻🇦 754 88 440ms 2 Oct 2024 386th albanian-laundromat 754 88 462ms 3 Nov 2025 388th 0xjac 🇨🇭 754 158 266ms 17 Jun 2025 389th MeWhenI 🇻🇦 754 162 26ms 2 Oct 2024 390th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 391st stefangimmillaro 753 94 1ms 30 Oct 2024 391st emgordon154 753 94 2ms 7 Feb 2026 393rd davecame 752 106 17ms 1 Oct 2024 393rd starfihs 752 106 10ms 2 Oct 2024 393rd rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 393rd snydej 752 106 17ms 21 Nov 2024 393rd andrewjc2000 752 106 17ms 17 Jul 2025 393rd qpwoeirut 752 106 10ms 19 Aug 2025 393rd KatieLG 🇬🇧 752 106 17ms 11 Feb 2026 400th kg583 🇺🇸 752 156 48ms 19 days ago First Prev 321–400 of 930 Next Last